I have a newer case, not sure of the name or brand but it has a built in kickstand and comes with a holster. It isn't as durable as an Otterbox but it does the job. It isn't beefy or heavy but very convenient for me.

I will caution you this. If you plan on buying the Rapid Vehicle Charger/Car Dock, your MAXX will not fit into it with the Otterbox Commuter case. I don't know what the difference in the two cases (Commuter and Defender) are, aside from the Defender having a third piece which is a completely separate screen protector. I just ordered a ZAGG case just to see if it'll fit in with everything nicely.

The defender has a serious belt clip that comes with it, some people claim it's hard to get out of pockets, but that's not a pRoblem for me (unless I'm wearing business slacks).

I just got the tpu, I'm having a hard time adjusting to the thinness, but I'm one of the few who loves the size of the defender. The tpu has been awesome so far
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I personally like Diztronic's phone case, I have both the clear smoke black and then version 2 with the matte black backing and glossy black trim around the edges. It's made of TPU which is harder than silicone but softer than plastic. Has a very nice soft feel on the backing similar to the carbon fiber wrap on the back of the Maxx. Barely adds any thickness and never sticks to cloth like silicone. I'll let the images do the talking. Oh and best part? It was about $10.

I use this one as well and realy like it. It has the belt clip/case holder for the times I want to wear it on my belt, and it has the slimmer case that works great for carrying in my pocket. The only down side is that I have to take it out of the case if I want to use it in the car dock or in the lapdock.